A Black Friday "deal" is often a normal price next to an inflated list price. Here a geiger counter only counts as on sale when its checked price is at least 15% below its own typical price over the last 90 days, from our price history. The best-rated models are listed too, since many are good value without a sale. See deals in every category.
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
On sale now
No geiger counter rated 3.8 or higher is 15% or more below its typical price at the last price check (November 9, 2026). Prices are rechecked through the sales; this list updates when one drops. See the recent price changes.
Best buys at their normal price
The top-rated models in each detector type. A sale on one of these is worth more than a big discount on a weaker model.
Best Beta-Gamma Geiger Counters
- GQ GMC-500+#1 of 9Full review
The GQ to buy if you want a counter that keeps working at high dose rates. It suits emergency kits as well as everyday monitoring.
Amazon $128$128GM tube138 CPM/µSv/h42,500 µSv/h - GQ GMC-500#2 of 9Full review
A good value desk or window monitor that posts readings online over Wi-Fi. Pick the 500+ if you want readings at very high levels.
Amazon $118$118GM tube138 CPM/µSv/h4,250 µSv/h - MOESAPU FS-5000#3 of 9Full review
A cheap counter with a wide listed range for an emergency drawer. Its low sensitivity makes it a poor choice for checking samples.
Amazon $64.99$64.99GM tube60 CPM/µSv/h50,000 µSv/h
Best Alpha-Beta-Gamma Geiger Counters
- GQ GMC-600 Pro#1 of 7Full review
The best value alpha-capable counter, with the same pancake tube as meters costing twice as much. A strong pick for checking surfaces, glass and minerals.
Amazon $298$298Mica window GM tube348 CPM/µSv/h4,250 µSv/h - Mazur PRM-9000#2 of 7Full review
A well-built pancake survey meter for contamination checks and collectors. It is good, but it is expensive for what the tube delivers.
Amazon $699$699Mica window GM tube350 CPM/µSv/h1,250 µSv/h - Radiation Alert Monitor 200#3 of 7Full review
A compact professional survey meter that reads all four radiation types. Hobbyists get more sensitivity for less with a pancake-tube counter.
Amazon $799.95$799.95Mica window GM tube107 CPM/µSv/h2,000 µSv/h
Best Scintillation Radiation Detectors
- Radiacode 110#1 of 6Full review
The best detector for finding and identifying weak sources, from uranium glass to contaminated finds. Pair it with a high-range meter if you want emergency coverage.
Amazon $399$399Scintillator4,620 CPM/µSv/h400 µSv/h - Radiacode 102#2 of 6Full review
The cheapest way to get a pocket gamma spectrometer with a polished phone app. A great everyday detector for collectors and travellers.
Amazon $249$249Scintillator1,800 CPM/µSv/h1,000 µSv/h - Radiacode 103#3 of 6Full review
The Radiacode for people who mainly want isotope identification in a pocket size. If you just want dose readings, the 102 is enough.
Amazon $319$319Scintillator1,800 CPM/µSv/h1,000 µSv/h
